131 resultados para Nematoda (Sistematica)
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Objetivo: Analisar os desfechos aumento/diminuição da pressão intracraniana e/ou queda da pressão de perfusão cerebral, proporcionados pela fisioterapia respiratória em pacientes graves assistidos em unidade de terapia intensiva. Métodos: Por meio de uma revisão sistemática da literatura, foram selecionados ensaios clínicos publicados entre 2002 e 2012. A busca envolveu as bases de dados LILACS, SciELO, MedLine e PEDro, usando os descritores physical therapy, physiotherapy, respiratory therapy e randomized controlled trials em cruzamento com o descritor intracranial pressure. Resultados: Foram incluídos 5 estudos, que somaram 164 pacientes, com média de idade entre 25 e 65 anos, e que indicaram que as manobras de fisioterapia respiratória aumentaram significativamente a pressão intracraniana, sem alterar a pressão de perfusão cerebral. Os artigos abordaram as técnicas de vibração, vibrocompressão, tapotagem, drenagem postural, além da manobra de aspiração intratraqueal. Todos os pacientes estavam sob ventilação mecânica invasiva. Conclusão: A fisioterapia respiratória promove aumento da pressão intracraniana. Os estudos sugerem que não há repercussões hemodinâmicas e respiratórias a curto prazo ou alteração da pressão de perfusão cerebral. Entretanto, não há estudos que avaliem desfechos clínicos e que assegurem a segurança das manobras.
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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The aim of this study was to report the burrowing owl Athene cunicularia as a new host for the filarid nematode Pelecitus sp. in southeastern Brazil for the first time, as well as reporting the occurrence of this nematode species in the body cavity, near the cervical air sac and lung region. This study contributes towards knowledge of parasitism in Brazilian wild birds and an anatomical region of the host as an infection site for Pelecitus sp.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Few studies have been performed with parasites of marine and estuarine fish in southern Brazil. In the present study, unpublished results show the ways of parasitism of juvenile mullet by parasites. The toxicity of formaldehyde and the effectiveness of this chemotherapy in controlling parasites in reared juvenile mullet Mugil liza were also studied. Juvenile mullets (1 +/- 0.26 g; 4.1 +/- 0.4 cm) were exposed to different concentrations of 37% formaldehyde: control group and five formaldehyde concentrations which were tested: T1 (13.5), T2 (21.6), T3 (40.5), T4 (81) and T5 (135) mg L-1 with 8 fish per repetition in triplicate. To verify the drug effectiveness in parasitic control, juvenile mullets were exposed to 1 h prophylactic bath of 37% formaldehyde with a control group and five formaldehyde concentrations: T1 (67.5), T2 (135), T3 (270), T4 (405) and T5 (540) mg L-1, 8 fish per repetition in triplicate. Ligophorus cf. uruguayensis (Monogenoidea: Ancyrocephalidae) and Solostamenides cf. platyorchis (Monogenoidea: Microcotylidae) were identified in the gills. Digenea and Nematoda were observed in the intestines. This is the first occurrence of S. cf. platyorchis in Brazil. During the toxicity test, the LC50-96 h was estimated at 20.77 mg L-1 of formaldehyde. During the 1 h formaldehyde prophylactic bath, all parasites were eliminated in formaldehyde concentrations between 135 and 540 mg L-1. High survival rate was observed in all treatments. Values of prevalence and intensity of infestation observed in this study showed the potential damage caused by Monogenoidea to mullet. Formaldehyde baths with 135 mg L-1 are recommended to control Monogenoidea in mullet and the safe limits for formaldehyde use were presented. Besides, the endoparasites were tolerant to formaldehyde exposure. (C) 2012 Elsevier B.V. All rights reserved.
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Os Nematoda e Protista podem ser transmitidos ao homem de diversas maneiras, mas pouca ênfase é dada para a transmissão mecânica por intermédio de formigas. Assim, esse trabalho procurou investigar a transmissão mecânica de ovos de Ascaris lumbricoides e cistos de Entamoeba coli pelos Formicidae. Através de experimentos com espécies mantidas em ninhos no laboratório (Tapinoma melanocephalum, Linepithema humile e Monomorium pharaonis) e com 17 espécies de formigas de uma área antropizada na região de Mogi as Cruzes (SP), foi possível constar que os ovos A. lumbricoides foram transportados por L. humile, tanto no campo (1 operária) como no laboratório (1 operária), por Camponotus rufipes (2), por Solenopsis saevissima (1) e por Acromyrmrex niger (1). em três operárias de C. rufipes foram encontrados cistos de E. coli. Apesar da baixa incidência de transporte, as três primeiras espécies pelo fato de viverem muito próximas ao ser humano, podem levar para dentro do ambiente domiciliar patógenos de Nematoda e Protista.
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This study evaluated the gastrointestinal helminth fauna of long-nosed armadillos, Dasypus novemcinctus, from the Pantanal wetlands, Aquidauana sub-region, Aquidauana County, Mato Grosso do Sul State, Brazil. Thirteen species of nematodes, comprising seven genera and four families, were recovered from their gastrointestinal tracts. The following descriptors of infection were determined: prevalence, variation of intensity, average intensity and abundance. Hadrostrongylus speciosum n. gen. et n. sp. is first described here. (c) 2006 Published by Elsevier B.V.
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Foram coletados 570 nematódeos Filaroidea de 36 capivaras, sacrificadas entre 1989 e 1996, onze jovens menores que seis meses e 25 adultas, provenientes da região do pantanal do Mato Grosso do Sul (Paiaguás). Cento e setenta e seis (176) espécimes de Yatesia hydrochoerus foram encontrados nas fáscias dos músculos esqueléticos, principalmente da região do obliquus externus abdominis e na face interna dos membros posteriores e trezentos e noventa e quatro (394) espécimes de Cruorifilaria tuberocauda foram coletados das artérias renais (380) e das artérias pulmonares (14) dos animais.
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O efeito de diversas tecnologias de aplicação foi avaliado sobre a concentração, viabilidade e eficácia dos juvenis infectantes dos nematóides Heterorhabditis indica Poinar, Karunakar & David (IBCB-n5) e Steinernema sp. (IBCB-n6) no controle da lagarta-do-cartucho Spodoptera frugiperda Smith na cultura do milho. Para o controle da lagarta-do-cartucho no terceiro estádio em placas de Petri foram necessários 280 juvenis infectantes de Steinernema sp., enquanto que 400 juvenis infectantes de H. indica controlaram apenas 75% das lagartas. Podem-se pulverizar os entomopatógenos, sem que haja perda significativa na sua concentração e viabilidade, com equipamentos que forneçam carga elétrica à calda, ponta centrífuga e pontas hidráulicas. Entretanto, o emprego de pulverizadores com pontas que requerem elementos filtrantes com malha igual a 100 resultou em decréscimo na concentração de juvenis infectantes de H. indica e Steinernema sp., de 28% e 53%, respectivamente. Os tensoativos organosiliconado e etoxilados não afetaram a viabilidade dos juvenis infectantes de Steinernema sp. Nos experimentos de pulverização em plantas de milho (V6) com Steinernema sp., doses equivalentes a até 288 milhões de juvenis infectantes por hectare, diluídos em volume de calda de até 800 L ha-1 com 0,01 % do tensoativo etoxilado, ou nesse volume seguido de exposição a chuva artificial (lâmina de água de 6 mm), não foram suficientes para o controle de S. frugiperda em casa-de-vegetação.
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This study presented data on helminth fauna of two gecko lizards, Hemidactylus agrius and Lygodactylus klugei, from Caatinga biome in northeastern Brazil. It was found four helminth species parasitizing H. agrius, cistacanth of Centrorhynchidae (Acanthocephala) and the nematodes Physalopteridae (larvae), Parapharyngodon alvarengai (Pharyngodonidae) and Skrjabinelazia sp. (Seuratidade). The host Lygodactylus klugei presented two helminth species, one individual of Mesocoelium monas (Trematoda: Mesocoeliidae) in the small intestine and one encysted larvae of Physalopteridae (Nematoda: Physalopteridae) attached at stomach wall. The lizard species showed a low prevalence and low richness of helminths. Moreover, H. agrius presented a low intensity of infection. The foraging mode, arboreal habit and a restricted composition of diet could favoring the low prevalence, low infection rates and low richness of helminths found in these geckonid host species.
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This study was carried out to evaluate the relationship of abomasal inflammatory cells and parasite-specific immunoglobulin A (IgA) in mucus, with the resistance to Haemonchus contortus infection in three breeds of sheep naturally infected with gastrointestinal nematodes. The breeds were the native Santa Ines sheep, and the European Suffolk and Ile de France breeds. Mast cells, eosinophils and globule leucocytes were enumerated in abomasal mucosa. Eosinophils within the sub-mucosa also were counted separately. Histamine concentration was estimated in abomasal tissue samples. Enzyme-linked immunosorbent assay was carried out in mucus samples to determine the level of IgA anti-H. contortus third and fifth instar. There were no significant differences among group means of these variables (P > 0.05). The correlation coefficients between fecal egg counts (FEC) x mast cells (r = -0.490; P < 0.05) and FEC x eosinophils in sub-mucosa (r = -0.714; P < 0.01) was significant in the Santa Ines sheep. In the Ile de France group, the correlation coefficients between globule leucocytes x FEC (r = -0.879; P < 0.001) and histamine x worm burden (r = -0.833; P < 0.01) were also significant. In the Santa Ines and Ile de France sheep, correlation coefficients between IgA anti-L3 x worm burden and IgA anti-L3 x FEC were negative. In general, inflammatory cells and IgA-parasite-specific in abomasum were inversely associated with H. contortus worm burden and FEC indicating that they may impair parasite development or fecundity in the three breeds of sheep. However, similar mean values of inflammatory cells and IgA were found in the resistant (Santa Ines) and in the susceptible (Suffolk and Ile de France) breeds of sheep. The enumeration of cells by histological assessment does not provide information on their functional activity, which may be different among breeds. Thus, the effect of breed on the functional activity of these and other inflammatory cells is an important area for further study. (c) 2004 Elsevier B.V. All rights reserved.
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The trial was carried out to investigate parasite host specificity and to analyse the dynamics of infection with nematodes parasitizing sheep and catt:le raised together or separately in São Paulo state, Brazil, and, also to clarify doubts about the systematics of species of the genus Haemonchus on the basis of cytological and morphological studies. Ten steers and 32 ewes were randomly assigned to three paddocks (P), as follows: P1, 5 steers; P2, 5 steers and 16 ewes; and P3, 16 ewes. The animals remained on these paddocks in continuous grazing throughout the trial (1-yr period). Faecal exams and larvae counting on pasture were performed fortnightly. Once a month two tracer lambs were placed in each paddock, while two tracer calves were also placed, but only in the eighth month of the trial. All these animals were slaughtered for worm identification and counting. At the end of the trial, one steer and one ewe from P2, which showed high faecal egg counts, were also slaughtered for the same purpose. Nematodes identified cytogenetically as H. placei presented spicule hooks longer than those identified as H. contortus. The following distribution of parasites in cattle and sheep was observed: Bunostomum phlebotomum, H. similis, Mammomonogamus laryngeus strongly adapted to cattle, H. placei and Cooperia punctata more adapted to cattle than to sheep, Trichostrongylus axel and C. spatulata apparently more adapted to cattle, T. colubriformis strongly adapted to sheep, H. contortus more adapted to sheep than to cattle and C. curticei apparently more adapted to sheep. Cross-infection was shown to occur involving some species, however, with time the animals apparently eliminate the species that are not well adapted to them. Therefore, grazing management systems using cattle and sheep appear to be promising for worm control in southeastern Brazil. (C) 1997 Elsevier B.V. B.V.
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The response to natural infection by gastrointestinal nematodes was evaluated in three groups of lambing mature ewes: 16 Florida Native; 21 Rambouillet; and 18 1/2 Florida Native x 1/2 Rambouillet (F1 generation). Fecal egg counts (FEC),packed cell volume (PCV) and plasma protein levels were determined periodically through a one-year period. The highest FEC was recorded in Rambouillet ewes, with most of the means higher than 1000 eggs per gram (EPG). Florida Native and Fl ewes showed similar trends in FEC, with most of the means below 500 EPG. The highest mean PCV values were recorded in Florida Native ewes, followed in decreasing order by Fl and Rambouillet ewes. Fl ewes showed the lowest plasma protein levels and Florida Natives the highest. Fecal cultures revealed the highest percentages of Haemonchus larvae in Rambouillet ewes (>64%) and the lowest percentages in Florida Native ewes. Florida Native and Fl ewes were more resistant to gastrointestinal nematode infections than were Rambouillet ewes. High negative correlation coefficients between FEC x PCV and FEC x plasma protein levels coincided with peaks in mean FEC of Rambouillet (May and July), Florida Native and Fl ewes (October). This study showed that crossbreeding Rambouillet and Florida Native sheep resulted in the production of Fl ewes resistant against gastrointestinal nematode infections. (C) 1999 Elsevier B.V. B.V. All rights reserved.